81220048

素因数分解:

$2^4\times 7^2\times {\mathrm{13}}^2\times {\mathrm{613}}^1$

素因数の和:661

約数の個数: 90

約数和(自身を含む): 198543654

約数和(自身を除く): 117323606

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 49, 52, 56, 91, 98, 104, 112, 169, 182, 196, 208, 338, 364, 392, 613, 637, 676, 728, 784, 1183, 1226, 1274, 1352, 1456, 2366, 2452, 2548, 2704, 4291, 4732, 4904, 5096, 7969, 8281, 8582, 9464, 9808, 10192, 15938, 16562, 17164, 18928, 30037, 31876, 33124, 34328, 55783, 60074, 63752, 66248, 68656, 103597, 111566, 120148, 127504, 132496, 207194, 223132, 240296, 390481, 414388, 446264, 480592, 725179, 780962, 828776, 892528, 1450358, 1561924, 1657552, 2900716, 3123848, 5076253, 5801432, 6247696, 10152506, 11602864, 20305012, 40610024, 81220048]

約数ペア:

[(1, 81220048), (2, 40610024), (4, 20305012), (7, 11602864), (8, 10152506), (13, 6247696), (14, 5801432), (16, 5076253), (26, 3123848), (28, 2900716), (49, 1657552), (52, 1561924), (56, 1450358), (91, 892528), (98, 828776), (104, 780962), (112, 725179), (169, 480592), (182, 446264), (196, 414388), (208, 390481), (338, 240296), (364, 223132), (392, 207194), (613, 132496), (637, 127504), (676, 120148), (728, 111566), (784, 103597), (1183, 68656), (1226, 66248), (1274, 63752), (1352, 60074), (1456, 55783), (2366, 34328), (2452, 33124), (2548, 31876), (2704, 30037), (4291, 18928), (4732, 17164), (4904, 16562), (5096, 15938), (7969, 10192), (8281, 9808), (8582, 9464)]